Data for “Conduit formation and crustal microxenolith entrainment in a basaltic fissure eruption: Observations from Thríhnúkagígur Volcano, Iceland”

Conduit formation and crustal microxenolith entrainment in a basaltic fissure eruption: Observations from Thríhnúkagígur Volcano, Iceland
Authors: Michael R. Hudak*(1,2), Maureen D. Feineman(2), Peter C. LaFemina(2), Halldór Geirsson(2,3) and Samuele Agostini(4)
Affiliations: (1)Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543. (2)Department of Geosciences, The Pennsylvania State University, University Park, PA 16802. (3)Nordic Volcanological Center, Institute of Earth Sciences, University of Iceland, IS-101, University of Iceland, Reykjavík, Iceland. (4)Istituto di Geoscienze e Georisorse, Consiglio Nazionale delle Ricerche, Pisa, Italy.
*Corresponding author, michael.hudak@whoi.edu

Description: These data correspond to the article “Conduit formation and crustal microxenolith entrainment in a basaltic fissure eruption: Observations from Thríhnúkagígur Volcano, Iceland” by Hudak et al. submitted to Volcanica. Table S1 records the modal abundances of different phases in thin sections. Table S2 provides major and trace element geochemistry, and Sr and Nd isotope compositions. Figure S1 is the unannotated version of the photo in Fig. 4 of the main text.

Data files:
Hudak_etal_TableS1.csv
Table S1. Mineral modes are normalized to 100% after removing the vesicle mode. *Oxides were counted in samples where the groundmass was coarse enough to distinguish them from glass.
Hudak_etal_TableS2.csv
Table S2. Major element chemical analyses in weight percent oxides. For plotting, all samples were normalized to 100% after removing LOI. Trace element data are in ppm. Two standard deviations are given in one-millionths for 87Sr/86Sr and 143Nd/144Nd. *Duplicate analysis. Duplicates are averaged for all figures.
Hudak_etal_FigureS1.png
Figure S1. Unannotated photomosaic of the dike and tephra in the wall of the cave at Thríhnúkagígur from Fig. 4 in the main text.

Date of data collection: 2014-07-29 to 2020-09-29